The Innocents Abroad, or The New Pilgrims' Progress is a travel book by American author Mark Twain, published in 1869, which humorously chronicles what Twain called his "Great Pleasure Excursion" on board the chartered vessel Quaker City (formerly USS Quaker City), through Europe and the Holy Land, with a group of American travelers in 1867. It is based on an actual event, in a retired Civil War ship (the USS Quaker City).
